21051759

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{4271}}^1$

素因数の和:4358

約数の個数: 16

約数和(自身を含む): 29528064

約数和(自身を除く): 8476305

約数列:

[1, 3, 31, 53, 93, 159, 1643, 4271, 4929, 12813, 132401, 226363, 397203, 679089, 7017253, 21051759]

約数ペア:

[(1, 21051759), (3, 7017253), (31, 679089), (53, 397203), (93, 226363), (159, 132401), (1643, 12813), (4271, 4929)]